Chuck / Dave:
Chuck, I am with you....I don't understand how a few cups of antifreeze
would get to the engine this way.
Dave, I do something similar to winterize the engine, but no exactly the
same. While on the hard, I fill a 5 gallon bucket in the cockpit with a
fresh water garden hose keeping it filled and over flowing if it
happens....I run a hose from the bucket to the raw water pump (remove
the raw water hose to the pump, of course)......start the engine to
flush the salt water and warm up the engine....shut the engine
down......empty the bucket of fresh water.....put a gallon of
concentrated antifreeze plus one gallon of fresh water in the
bucket....restart the engine until I see the antifreeze exiting the
exhaust thruhull....system full of antifreeze......shut down the
engine.....my Yanmar 2GMF engine and exhaust system takes about the 2
gallons .....always a little left which I put in the head.
Are you absolutely sure you have a hydrolock? As mentioned by a
lister, first check your impeller in the raw water pump......if it is
fine and all intact, I don't know how you could have a hydrolock but I
am no marine engine mechanic.
Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
On 2015-10-22 8:55 PM, Chuck S via CnC-List wrote:
Dave,
I'm surprised a few cups of antifreeze would get to the engine by the
way you describe. The point where the raw water shoots into the
exhaust should be angled to enter the exhaust and not the engine.
Before it backs up into the engine, your hose from cockpit to engine,
raw water strainer, the heat exchanger, exhaust hose and muffler needs
to fill first, before it can back into the engine. That's a lot of
water to move. Also, remember if the engine was stopped, the exhaust
valve is closed on 3 of the 4 cylinders, so the intrusion is
limited. Starting the thing might blow it all out?
If I remember right, I can open a water hose under pressure to my raw
water pump but it doesn't pass through the impeller until I start the
engine turning. I suspect your pump impeller may be worn and need
replacement?
I'm hoping it is not hydolocked, but not starting for some other
reason probably electrical, key off, switch off, batteries turned
off. Did you hear the solenoid click? Did the starter whine or hum
at all?
Chuck
Resolute
1990 C&C 34R
Broad Creek, Magothy River, Md
------------------------------------------------------------------------
*From: *"David Pulaski via CnC-List" <cnc-list@cnc-list.com>
*To: *cnc-list@cnc-list.com
*Cc: *"David Pulaski" <davepula...@hotmail.com>
*Sent: *Thursday, October 22, 2015 3:47:46 AM
*Subject: *Stus-List Hydrolocked!
Thanks all for the words of advice! I'm going to be a wreck until
Sunday when I can get there to try to resolve this situation.
So here's how I managed to do this:
I was attempting to winterize the engine, boat still in the water.
First I just ran the engine normally for a while, maybe 30-45 minutes,
while I got everything ready. After I shut it down and closed the raw
water intake seacock, here was my winterizing plan: 5 gallon bucket
sitting on the cockpit sole, filled with pink antifreeze. A length of
hose running through the opening port in the aft cabin from the
cockpit to the engine compartment, connected to the raw water side of
the water strainer. Seemed simple enough: I could start the engine
and watch the level in the bucket, adding more if necessary.
My big mistake was attempting to prime the hose with antifreeze. I
was just using a small cup to pour some antifreeze into the hose from
the end up in the cockpit; no pressure. It didn't occur to me that
the small height differential would be enough to push water past the
raw water pump into the cylinders, but apparently it did. I didn't
realize what had happened until I attempted to start the engine, and
it wouldn't turn over. At first I thought the batteries didn't have
enough juice to restart after my cold startup a few moments earlier.
I stabbed the button a couple of times, and then it dawned on me.
I went back down below and disconnected the exhaust hose from the
manifold riser, and sure enough, pink poured out. Perhaps I'm having a
stupid moment but I'm really still scratching my head over this. I
really didn't pour much down the hose, just a couple of cups. But
I'm actually somewhat hopeful that the contents of the cylinders is
mostly antifreeze - should give some corrosion protection I'm hoping.
Until sunday...
-Dave
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